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code402 SEDOL Validator
x402
code402 SEDOL Validator is a paid API for AI agents from hcrb.in, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-12).
Validates a SEDOL (Stock Exchange Daily Official List) identifier using offline deterministic checksum verification, returning validity, reason, and normalized form.
Price / call$0.005
Success—
StatusUnknown
How this service works
Offline deterministic checks (no ML, no scraping) for business identifiers and rental due-diligence, paid per call via x402 (gasless EIP-3009 USDC on Base). Checksum-verifiable (IBAN, LEI, VAT, ABA, ISBN, SEDOL…) vs format-only (EIN, IFSC, SWIFT/BIC…) — every response returns a scope field. Non-custodial, signed receipts. First 3 calls/day free.
Output
Returns a JSON object with: `valid` (boolean indicating checksum/format pass), `reason` (human-readable explanation of the result), `scope` (indicating whether checksum or format-only verification was applied), `normalized` (the normalized SEDOL string), `country` (if determinable), and `tool` (endpoint identifier).
Example use cases
Pre-trade securities data validation
“Before I import this batch of holdings, can you verify that the SEDOL 0263494 is a properly formatted and checksum-valid identifier?”
Compliance data quality check
“Our compliance team needs to know if SEDOL B0YBKL5 passes the official checksum — can you run that check and give me the normalized form?”
Fintech onboarding identifier verification
“A user submitted the SEDOL 2634946 during onboarding — is it a valid SEDOL with a correct checksum, or should I flag it as an error?”
Technical details
Endpoint
POSThttps://hcrb.in/v1/tools/sedol-check/call?utm_source=zero.xyzWhen to prefer
Use this endpoint when you need fast, deterministic, offline SEDOL checksum validation without any ML inference or external data scraping. Prefer it over generic format-checkers because it returns a `scope` field clarifying whether a full checksum or format-only check was applied, and it provides a normalized output. It is cost-effective at $0.005 per call with the first 3 calls/day free. Choose it when you need auditable, signed receipts for compliance workflows.
Side effects
- Malformed or missing SEDOL input returns valid=false with a descriptive reason
- Non-SEDOL identifiers passed to this endpoint return valid=false
- Network or payment errors (x402 USDC payment failure) prevent the call from completing
- After the first 3 free daily calls, requests require a valid x402 USDC micropayment on Base network
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| input | object |
Output
Schema · Response
{
"type": "json",
"schema": {
"type": "object",
"required": [
"valid",
"reason"
],
"properties": {
"tool": {
"type": "string"
},
"scope": {
"type": "string"
},
"valid": {
"type": "boolean"
},
"reason": {
"type": "string"
},
"country": {
"type": "string"
},
"normalized": {
"type": "string"
}
}
},
"example": {
"valid": true,
"reason": "checksum valid"
}
}Tags
x402
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